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How can I add a color bar to my graph?

xyz = Flatten[Table[{i, j, k}, {i, 1, 10, .35}, {j, 1, 10, .35}, {k, 1, 10, .35}], 2];

f[x_, y_, z_] :=  (1 + z) + Im[Sqrt[-( (z))^2 - x z]]

Graphics3D[Point[xyz, VertexColors -> (Hue /@ Rescale[f[##] & @@@ xyz])], Axes -> True, AxesLabel -> {x, y, z}]
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first define another colorfunction

cf := If[# > 0, Hue[#/200], Black] &

then I would use ListPointPlot3D

 ListPointPlot3D[xyz, 
 ColorFunction -> Function[{x, y, z}, cf@f[x, y, z]], 
 ColorFunctionScaling -> False, 
 PlotLegends -> BarLegend[{cf, {-100, 200}}], BoxRatios -> {1, 1, 1}]

enter image description here

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  • $\begingroup$ your colorbar doesn't show values of the function correctly $\endgroup$ Aug 3 '17 at 10:54
  • $\begingroup$ Ok, but I can not choose your answer because it is not complete $\endgroup$ Aug 3 '17 at 10:58
  • $\begingroup$ I didnt find it $\endgroup$ Aug 3 '17 at 11:20
  • $\begingroup$ BarLegend doesnt have such a option $\endgroup$ Aug 3 '17 at 11:48
  • $\begingroup$ Is there any option which can show negative parts of the graph in forexample black? $\endgroup$ Aug 3 '17 at 11:53

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